Tomas Winkler | ab69a5a | 2009-10-17 09:09:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | * iwmc3200top - Intel Wireless MultiCom 3200 Top Driver |
| 3 | * drivers/misc/iwmc3200top/log.c |
| 4 | * |
| 5 | * Copyright (C) 2009 Intel Corporation. All rights reserved. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License version |
| 9 | * 2 as published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 19 | * 02110-1301, USA. |
| 20 | * |
| 21 | * |
| 22 | * Author Name: Maxim Grabarnik <maxim.grabarnink@intel.com> |
| 23 | * - |
| 24 | * |
| 25 | */ |
| 26 | |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/mmc/sdio_func.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 29 | #include <linux/slab.h> |
Tomas Winkler | ab69a5a | 2009-10-17 09:09:34 +0000 | [diff] [blame] | 30 | #include <linux/ctype.h> |
| 31 | #include "fw-msg.h" |
| 32 | #include "iwmc3200top.h" |
| 33 | #include "log.h" |
| 34 | |
| 35 | /* Maximal hexadecimal string size of the FW memdump message */ |
| 36 | #define LOG_MSG_SIZE_MAX 12400 |
| 37 | |
| 38 | /* iwmct_logdefs is a global used by log macros */ |
| 39 | u8 iwmct_logdefs[LOG_SRC_MAX]; |
| 40 | static u8 iwmct_fw_logdefs[FW_LOG_SRC_MAX]; |
| 41 | |
| 42 | |
| 43 | static int _log_set_log_filter(u8 *logdefs, int size, u8 src, u8 logmask) |
| 44 | { |
| 45 | int i; |
| 46 | |
| 47 | if (src < size) |
| 48 | logdefs[src] = logmask; |
| 49 | else if (src == LOG_SRC_ALL) |
| 50 | for (i = 0; i < size; i++) |
| 51 | logdefs[i] = logmask; |
| 52 | else |
| 53 | return -1; |
| 54 | |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | |
| 59 | int iwmct_log_set_filter(u8 src, u8 logmask) |
| 60 | { |
| 61 | return _log_set_log_filter(iwmct_logdefs, LOG_SRC_MAX, src, logmask); |
| 62 | } |
| 63 | |
| 64 | |
| 65 | int iwmct_log_set_fw_filter(u8 src, u8 logmask) |
| 66 | { |
| 67 | return _log_set_log_filter(iwmct_fw_logdefs, |
| 68 | FW_LOG_SRC_MAX, src, logmask); |
| 69 | } |
| 70 | |
| 71 | |
| 72 | static int log_msg_format_hex(char *str, int slen, u8 *ibuf, |
| 73 | int ilen, char *pref) |
| 74 | { |
| 75 | int pos = 0; |
| 76 | int i; |
| 77 | int len; |
| 78 | |
| 79 | for (pos = 0, i = 0; pos < slen - 2 && pref[i] != '\0'; i++, pos++) |
| 80 | str[pos] = pref[i]; |
| 81 | |
| 82 | for (i = 0; pos < slen - 2 && i < ilen; pos += len, i++) |
| 83 | len = snprintf(&str[pos], slen - pos - 1, " %2.2X", ibuf[i]); |
| 84 | |
| 85 | if (i < ilen) |
| 86 | return -1; |
| 87 | |
| 88 | return 0; |
| 89 | } |
| 90 | |
| 91 | /* NOTE: This function is not thread safe. |
| 92 | Currently it's called only from sdio rx worker - no race there |
| 93 | */ |
| 94 | void iwmct_log_top_message(struct iwmct_priv *priv, u8 *buf, int len) |
| 95 | { |
| 96 | struct top_msg *msg; |
| 97 | static char logbuf[LOG_MSG_SIZE_MAX]; |
| 98 | |
| 99 | msg = (struct top_msg *)buf; |
| 100 | |
| 101 | if (len < sizeof(msg->hdr) + sizeof(msg->u.log.log_hdr)) { |
| 102 | LOG_ERROR(priv, FW_MSG, "Log message from TOP " |
| 103 | "is too short %d (expected %zd)\n", |
| 104 | len, sizeof(msg->hdr) + sizeof(msg->u.log.log_hdr)); |
| 105 | return; |
| 106 | } |
| 107 | |
| 108 | if (!(iwmct_fw_logdefs[msg->u.log.log_hdr.logsource] & |
| 109 | BIT(msg->u.log.log_hdr.severity)) || |
| 110 | !(iwmct_logdefs[LOG_SRC_FW_MSG] & BIT(msg->u.log.log_hdr.severity))) |
| 111 | return; |
| 112 | |
| 113 | switch (msg->hdr.category) { |
| 114 | case COMM_CATEGORY_TESTABILITY: |
| 115 | if (!(iwmct_logdefs[LOG_SRC_TST] & |
| 116 | BIT(msg->u.log.log_hdr.severity))) |
| 117 | return; |
| 118 | if (log_msg_format_hex(logbuf, LOG_MSG_SIZE_MAX, buf, |
| 119 | le16_to_cpu(msg->hdr.length) + |
| 120 | sizeof(msg->hdr), "<TST>")) |
| 121 | LOG_WARNING(priv, TST, |
| 122 | "TOP TST message is too long, truncating..."); |
| 123 | LOG_WARNING(priv, TST, "%s\n", logbuf); |
| 124 | break; |
| 125 | case COMM_CATEGORY_DEBUG: |
| 126 | if (msg->hdr.opcode == OP_DBG_ZSTR_MSG) |
| 127 | LOG_INFO(priv, FW_MSG, "%s %s", "<DBG>", |
| 128 | ((u8 *)msg) + sizeof(msg->hdr) |
| 129 | + sizeof(msg->u.log.log_hdr)); |
| 130 | else { |
| 131 | if (log_msg_format_hex(logbuf, LOG_MSG_SIZE_MAX, buf, |
| 132 | le16_to_cpu(msg->hdr.length) |
| 133 | + sizeof(msg->hdr), |
| 134 | "<DBG>")) |
| 135 | LOG_WARNING(priv, FW_MSG, |
| 136 | "TOP DBG message is too long," |
| 137 | "truncating..."); |
| 138 | LOG_WARNING(priv, FW_MSG, "%s\n", logbuf); |
| 139 | } |
| 140 | break; |
| 141 | default: |
| 142 | break; |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | static int _log_get_filter_str(u8 *logdefs, int logdefsz, char *buf, int size) |
| 147 | { |
| 148 | int i, pos, len; |
| 149 | for (i = 0, pos = 0; (pos < size-1) && (i < logdefsz); i++) { |
| 150 | len = snprintf(&buf[pos], size - pos - 1, "0x%02X%02X,", |
| 151 | i, logdefs[i]); |
| 152 | pos += len; |
| 153 | } |
| 154 | buf[pos-1] = '\n'; |
| 155 | buf[pos] = '\0'; |
| 156 | |
| 157 | if (i < logdefsz) |
| 158 | return -1; |
| 159 | return 0; |
| 160 | } |
| 161 | |
| 162 | int log_get_filter_str(char *buf, int size) |
| 163 | { |
| 164 | return _log_get_filter_str(iwmct_logdefs, LOG_SRC_MAX, buf, size); |
| 165 | } |
| 166 | |
| 167 | int log_get_fw_filter_str(char *buf, int size) |
| 168 | { |
| 169 | return _log_get_filter_str(iwmct_fw_logdefs, FW_LOG_SRC_MAX, buf, size); |
| 170 | } |
| 171 | |
| 172 | #define HEXADECIMAL_RADIX 16 |
| 173 | #define LOG_SRC_FORMAT 7 /* log level is in format of "0xXXXX," */ |
| 174 | |
| 175 | ssize_t show_iwmct_log_level(struct device *d, |
| 176 | struct device_attribute *attr, char *buf) |
| 177 | { |
| 178 | struct iwmct_priv *priv = dev_get_drvdata(d); |
| 179 | char *str_buf; |
| 180 | int buf_size; |
| 181 | ssize_t ret; |
| 182 | |
| 183 | buf_size = (LOG_SRC_FORMAT * LOG_SRC_MAX) + 1; |
| 184 | str_buf = kzalloc(buf_size, GFP_KERNEL); |
| 185 | if (!str_buf) { |
| 186 | LOG_ERROR(priv, DEBUGFS, |
| 187 | "failed to allocate %d bytes\n", buf_size); |
| 188 | ret = -ENOMEM; |
| 189 | goto exit; |
| 190 | } |
| 191 | |
| 192 | if (log_get_filter_str(str_buf, buf_size) < 0) { |
| 193 | ret = -EINVAL; |
| 194 | goto exit; |
| 195 | } |
| 196 | |
| 197 | ret = sprintf(buf, "%s", str_buf); |
| 198 | |
| 199 | exit: |
| 200 | kfree(str_buf); |
| 201 | return ret; |
| 202 | } |
| 203 | |
| 204 | ssize_t store_iwmct_log_level(struct device *d, |
| 205 | struct device_attribute *attr, |
| 206 | const char *buf, size_t count) |
| 207 | { |
| 208 | struct iwmct_priv *priv = dev_get_drvdata(d); |
| 209 | char *token, *str_buf = NULL; |
| 210 | long val; |
| 211 | ssize_t ret = count; |
| 212 | u8 src, mask; |
| 213 | |
| 214 | if (!count) |
| 215 | goto exit; |
| 216 | |
| 217 | str_buf = kzalloc(count, GFP_KERNEL); |
| 218 | if (!str_buf) { |
| 219 | LOG_ERROR(priv, DEBUGFS, |
| 220 | "failed to allocate %zd bytes\n", count); |
| 221 | ret = -ENOMEM; |
| 222 | goto exit; |
| 223 | } |
| 224 | |
| 225 | memcpy(str_buf, buf, count); |
| 226 | |
| 227 | while ((token = strsep(&str_buf, ",")) != NULL) { |
| 228 | while (isspace(*token)) |
| 229 | ++token; |
| 230 | if (strict_strtol(token, HEXADECIMAL_RADIX, &val)) { |
| 231 | LOG_ERROR(priv, DEBUGFS, |
| 232 | "failed to convert string to long %s\n", |
| 233 | token); |
| 234 | ret = -EINVAL; |
| 235 | goto exit; |
| 236 | } |
| 237 | |
| 238 | mask = val & 0xFF; |
| 239 | src = (val & 0XFF00) >> 8; |
| 240 | iwmct_log_set_filter(src, mask); |
| 241 | } |
| 242 | |
| 243 | exit: |
| 244 | kfree(str_buf); |
| 245 | return ret; |
| 246 | } |
| 247 | |
| 248 | ssize_t show_iwmct_log_level_fw(struct device *d, |
| 249 | struct device_attribute *attr, char *buf) |
| 250 | { |
| 251 | struct iwmct_priv *priv = dev_get_drvdata(d); |
| 252 | char *str_buf; |
| 253 | int buf_size; |
| 254 | ssize_t ret; |
| 255 | |
| 256 | buf_size = (LOG_SRC_FORMAT * FW_LOG_SRC_MAX) + 2; |
| 257 | |
| 258 | str_buf = kzalloc(buf_size, GFP_KERNEL); |
| 259 | if (!str_buf) { |
| 260 | LOG_ERROR(priv, DEBUGFS, |
| 261 | "failed to allocate %d bytes\n", buf_size); |
| 262 | ret = -ENOMEM; |
| 263 | goto exit; |
| 264 | } |
| 265 | |
| 266 | if (log_get_fw_filter_str(str_buf, buf_size) < 0) { |
| 267 | ret = -EINVAL; |
| 268 | goto exit; |
| 269 | } |
| 270 | |
| 271 | ret = sprintf(buf, "%s", str_buf); |
| 272 | |
| 273 | exit: |
| 274 | kfree(str_buf); |
| 275 | return ret; |
| 276 | } |
| 277 | |
| 278 | ssize_t store_iwmct_log_level_fw(struct device *d, |
| 279 | struct device_attribute *attr, |
| 280 | const char *buf, size_t count) |
| 281 | { |
| 282 | struct iwmct_priv *priv = dev_get_drvdata(d); |
| 283 | struct top_msg cmd; |
| 284 | char *token, *str_buf = NULL; |
| 285 | ssize_t ret = count; |
| 286 | u16 cmdlen = 0; |
| 287 | int i; |
| 288 | long val; |
| 289 | u8 src, mask; |
| 290 | |
| 291 | if (!count) |
| 292 | goto exit; |
| 293 | |
| 294 | str_buf = kzalloc(count, GFP_KERNEL); |
| 295 | if (!str_buf) { |
| 296 | LOG_ERROR(priv, DEBUGFS, |
| 297 | "failed to allocate %zd bytes\n", count); |
| 298 | ret = -ENOMEM; |
| 299 | goto exit; |
| 300 | } |
| 301 | |
| 302 | memcpy(str_buf, buf, count); |
| 303 | |
| 304 | cmd.hdr.type = COMM_TYPE_H2D; |
| 305 | cmd.hdr.category = COMM_CATEGORY_DEBUG; |
| 306 | cmd.hdr.opcode = CMD_DBG_LOG_LEVEL; |
| 307 | |
| 308 | for (i = 0; ((token = strsep(&str_buf, ",")) != NULL) && |
| 309 | (i < FW_LOG_SRC_MAX); i++) { |
| 310 | |
| 311 | while (isspace(*token)) |
| 312 | ++token; |
| 313 | |
| 314 | if (strict_strtol(token, HEXADECIMAL_RADIX, &val)) { |
| 315 | LOG_ERROR(priv, DEBUGFS, |
| 316 | "failed to convert string to long %s\n", |
| 317 | token); |
| 318 | ret = -EINVAL; |
| 319 | goto exit; |
| 320 | } |
| 321 | |
| 322 | mask = val & 0xFF; /* LSB */ |
| 323 | src = (val & 0XFF00) >> 8; /* 2nd least significant byte. */ |
| 324 | iwmct_log_set_fw_filter(src, mask); |
| 325 | |
| 326 | cmd.u.logdefs[i].logsource = src; |
| 327 | cmd.u.logdefs[i].sevmask = mask; |
| 328 | } |
| 329 | |
| 330 | cmd.hdr.length = cpu_to_le16(i * sizeof(cmd.u.logdefs[0])); |
| 331 | cmdlen = (i * sizeof(cmd.u.logdefs[0]) + sizeof(cmd.hdr)); |
| 332 | |
| 333 | ret = iwmct_send_hcmd(priv, (u8 *)&cmd, cmdlen); |
| 334 | if (ret) { |
| 335 | LOG_ERROR(priv, DEBUGFS, |
| 336 | "Failed to send %d bytes of fwcmd, ret=%zd\n", |
| 337 | cmdlen, ret); |
| 338 | goto exit; |
| 339 | } else |
| 340 | LOG_INFO(priv, DEBUGFS, "fwcmd sent (%d bytes)\n", cmdlen); |
| 341 | |
| 342 | ret = count; |
| 343 | |
| 344 | exit: |
| 345 | kfree(str_buf); |
| 346 | return ret; |
| 347 | } |
| 348 | |